Effects of water amendment on basal and substrate-induced respiration rates of mineral soils |
| |
| Authors: | K Ritz R E Wheatley |
| |
| Institution: | (1) Department of Mycology and Bacteriology, Scottish Crop Research Institute, DD2 5DA Invergowrie, Dundee, UK |
| |
| Abstract: | Summary We studied the effects of amending soils with different volumes of water or glucose solution on respiration rates measured as CO2 evolution. Basal respiration was not significantly affected by the volume of water amendment, but substrate-induced respiration in static soil solutions was significantly reduced by increasing water contents. Inhibition of substrate-induced respiration was removed by continuously agitating the incubation vessels. Estimates of substrate-induced respiration rates for six soils differed markedly, depending on whether the vessels were stationary or agitated during the incubation. Agitation allowed increased discrimination between substrate-induced respiration rates for the soils, while static incubation only differentiated the soil with the highest substrate-induced respiration rate from the other soils. |
| |
| Keywords: | Soil respiration Soil water Substrate-induced respiration CO2 evolution |
| 本文献已被 SpringerLink 等数据库收录！ |
|
